45 results about "Black sand" patented technology

The invention discloses a method for producing bricks from silt and sludge, which comprises the following steps of: stacking silt and sludge of which the water content is 80-85% in a parking field to enable the water content of the silt and the sludge to be less than or equal to 60% for standby; conveying the silt and the sludge of which the water content is less than or equal to 60% to a primary stirrer through a feeding box for stirring together with fly ash, rice chaffs or wood flour, coal slag and black sand to enable the water content of the mixture to be less than or equal to 30%; putting the mixture in an aging field for aging to enable the water content of the mixture to be less than or equal to 22%; conveying the mixture to a secondary stirrer through the feeding box, and adding water or fly ash according to the degree of dryness and wetness to obtain a blank preparing material of which the water content is less than or equal to 20%; preparing the blank preparing material into a wet blank of which the water content is 17.8-18.8% through extruding and cutting devices; and roasting to obtain a finished product brick. In the method of the invention, silt and sludge are used as main raw materials for producing bricks; on one hand, clay does not need to be used, and the cultivated land can not be destroyed; and on the other hand, the invention solves the problem of treatment of silt and sludge, saves land resources and has obvious effect of environmental protection.

The invention discloses a soil arching effect demonstrator. There is a half cylindrical rubber airbag in the center of the bottom of Perspex box. Outside the airbag there is flexible rubber membrane. They are fixed at the bottom of Perspex box. From bottom to top, the Perspex box is filled with yellow sand and black sand; tube of the airbag is connected with inflatable bag outside the Perspex box; in the tube of inflatable bag, there is release valve and forward one-way valve; there is one backward one-way valve in the inflatable bag. By giving air and releasing air, the soil arching can be directly observed.

The invention provides high-strength and high-water-permeation water permeable bricks. Being different from common varieties in the prior art, the water permeable bricks provided by the invention arewater permeable bricks which are prepared by taking large-grain-diameter stones as a base material and matching cement and an enhancing agent according to a specific ratio, have high water permeationperformance and keep high strength. Specifically, the invention provides the water permeable bricks; the water permeable bricks are prepared from a bottom-layer material and a surface-layer material according to the ratio. The water permeable bricks provided by the invention are concrete-based materials; the bottom-layer material is formed by selecting the stones and the cement and adding the enhancing agent; the surface-layer material is formed by selecting white cement, black sand and white sand and adding the enhancing agent. According to the water permeable bricks provided by the invention, the stones, the white and the black sand are put into a material storage yard; the materials with the proper ratio are selected and are blended; then a mixture is conveyed into a molding machine anda surface material machine and then is prepared and molded; then the bricks are conveyed into a subequipment porter through a brick conveying machine and a plate hoisting plate; the molded bricks areconveyed to a nursing kiln by the subequipment porter; after curing is finished, the molded bricks are conveyed to a stacking machine, are conveyed and are packaged into finished products; the finished products enter a finished product storage yard and then are delivered from the factory. Immersed oil is recycled through pallets and then is conveyed to the molding machine to convey the bottom-layer material molded bricks.

The invention discloses a modified black-sand rubber material composed of the raw materials of, by weight, 0.6-1 part of parachlorometaxylenol, 2-3 parts of ammonium trimolybdate, 47-50 parts of attapulgite, 0.3-0.6 parts of hexamethyl cyclotrisiloxane, 0.2-0.6 parts of 8-10% sulfuric acid, 26-30 parts of melamine, 5-8 parts of a 37% formaldehyde solution, 7-10 parts of urea, 0.7-2 parts of ascorbic acid, 6-10 parts of microcrystalline cellulose, 1-1.2 parts of isopropanol, 3-4 parts of maleic anhydride, 210-230 parts of neoprene S40V, 4-7 parts of vinyl carboxylate, 3-4 parts of an anti-aging agent NBC, and 2-4 parts of sulfur. According to the invention, with the crosslinking effect of maleic anhydride, microcrystalline cellulose forms a closer network structure in melamine resin formed by melamine, urea and formaldehyde, such that resin viscosity and tensile deformation resistance are well improved, and certain reinforcement and tackifying effects are provided in rubber. Therefore, rubber flexural cracking resistance, hot air aging resistance and stability are improved. With added modified black sand, production cost can be effectively reduced, an effect of resource recycling is provided, and rubber toughness and surface strength are effectively improved.

The invention belongs to the field of casting part sand removing processes, and discloses an automatic cleaning batch seam sand burning technology for a casting part main runner. According to the automatic cleaning batch seam sand burning technology for the casting part main runner, a runner cleaning tool is utilized, and the sand blasting and vibrating processes are combined. The technology comprises the following steps of conducting surface sand removing treatment, using the sand vibrating technology for shot blasting, cleaning arbors, punching a hole with an electric drill with the drill bit, chopping off the arbors with an iron chopper, clamping out the arbors with a clipper, removing main runner burrs, cleaning the bent runner arbors, blowing off one bent runner arbor with oxygen, removing black sand inside the runner, beating a casting part with an iron hammer, enabling the sand inside the runner to flow out through vibration, then conducting secondary sand vibration and shot blasting, and conducting endoscopy. The automatic cleaning batch seam sand burning technology has the advantages of being reasonable, convenient to operate, applicable to the casting part with the complex runner, good in sand removing effect and the like.

The invention provides halogen-free black sand and a preparation method thereof. The halogen-free black sand is prepared from the following ingredients in percentage by weight: 30 to 50 percent of carbon black, 5 to 15 percent of lignite wax, 25 to 40 percent of diatomite, 5 to 10 percent of epoxidized soybean oil, 3 to 7 percent of fatty alcohol-polyoxyethylene ether, 3 to 5 percent of ammonium polyphosphate, 2 to 5 percent of fatty acid calcium salt, 0.1 to 0.5 percent of inorganic salt copper sulfate and 3 to 5 percent of coupling agents. A preparation process comprises the following stepsof sequentially adding formula raw materials into an internal mixer to be mixed for 20 minutes; obtaining a pre-finished product after the heating and grinding; transferring the pre-finished product into a butterfly type low-speed stirring machine for shearing and shaping the pre-finished product; obtaining a particular primary finished product of the black sand; filtering the particular primary finished product of the black sand to obtain a finished product. The black slurry produced by the method has the advantages of color spreading performance, high coloring capability and good flowability; the blackness degree and the brightness degree of the plastic products can be enhanced; a halogen-free and environment-friendly formula is used; phenomena of color spots, poor color vein dispersionand the like cannot occur; in the processing process, the mixing is firstly performed, and then, the grinding is repeatedly performed for three times, so that the carbon black, plasticizers and the like are uniformly scattered; the obtained black sand has the uniformly scattered color and luster and pigment figure.

The invention provides a novel influenza virus killing shelter and relates to the technical field of sterilization chambers. A front shelter door and a rear shelter door are arranged at the front andrear parts of the shelter respectively. An air inlet is formed in one side of the rear shelter door. An ultraviolet disinfection lamp, an air purifier and a negative chloride ion generator are installed at the top of the inside of the shelter body. A warming agent sprayer, a shelter temperature regulator and a shelter bottom temperature controller are installed on the inner side wall of the shelter body. An air outlet is formed in the upper end of the shelter body. A cotton mattress sheet is arranged at the bottom of the shelter body, tourmaline black sand is arranged below the cotton mattresssheet, and a partition plate, a magnetic cable heating mat, an insulation board and a bottom plate are sequentially arranged below the tourmaline black sand. The novel influenza virus killing sheltercan conveniently kill influenza viruses on human bodies, thereby well controlling infectivity of the influenza viruses.

The invention discloses a method for producing bricks from silt and sludge, which comprises the following steps of: stacking silt and sludge of which the water content is 80-85% in a parking field to enable the water content of the silt and the sludge to be less than or equal to 60% for standby; conveying the silt and the sludge of which the water content is less than or equal to 60% to a primarystirrer through a feeding box for stirring together with fly ash, rice chaffs or wood flour, coal slag and black sand to enable the water content of the mixture to be less than or equal to 30%; putting the mixture in an aging field for aging to enable the water content of the mixture to be less than or equal to 22%; conveying the mixture to a secondary stirrer through the feeding box, and adding water or fly ash according to the degree of dryness and wetness to obtain a blank preparing material of which the water content is less than or equal to 20%; preparing the blank preparing material into a wet blank of which the water content is 17.8-18.8% through extruding and cutting devices; and roasting to obtain a finished product brick. In the method of the invention, silt and sludge are used as main raw materials for producing bricks; on one hand, clay does not need to be used, and the cultivated land can not be destroyed; and on the other hand, the invention solves the problem of treatment of silt and sludge, saves land resources and has obvious effect of environmental protection.

The invention discloses a soil arching effect demonstrator. There is a half cylindrical rubber airbag in the center of the bottom of Perspex box. Outside the airbag there is flexible rubber membrane. They are fixed at the bottom of Perspex box. From bottom to top, the Perspex box is filled with yellow sand and black sand; tube of the airbag is connected with inflatable bag outside the Perspex box; in the tube of inflatable bag, there is release valve and forward one-way valve; there is one backward one-way valve in the inflatable bag. By giving air and releasing air, the soil arching can be directly observed.

Flow of water is in the same direction during a water-filtering cycle and a filter-cleaning cycle. That feature leads to an especially simple, economical and effective system for (a) producing filtered water and (b) cleaning, during a filter-cleaning cycle, the filter that cleans the water of particulates. No backwash is needed.Forward wash filter cleaning makes use of principles of physics, man-made equipment, and attraction of black sand (e.g., sand containing magnetite) to magnets. Those elements are combined in a novel way to (a) constrain the sand in a compact but permeable filtering layer and (b) allow a forward wash filter-cleaning cycle by simply flowing water through a layer of particulate-laden black sand after the layer has been made less compact by being disrupted during the filter-cleaning cycle. In other words, particulates previously trapped during a water-filtering cycle are washed away in forward-flowing, particulate-laden water during the filter-cleaning cycle.

The invention discloses a method for making an environmental-friendly brick by black sand waste materials. The method sequentially comprises the following steps of crushing, material proportioning, mud material preparation, mold pressing shaping, drying, slurry spraying, firing and cooling. The method has the advantages that the process is simple; the operation is convenient; black sand waste materials generated in the black sand industry can be used for producing environmental-friendly bricks, so that the black sand waste materials which are always useless in many years are changed into valuable materials; the pollution of the black sand waste materials on the peripheral environment is effectively avoided; the treatment cost is reduced; the environmental-friendly effect is good.